@@ -3217,16 +3217,14 @@ exhaustion is signalled by throwing @code{std::bad_alloc}. See also
@samp{new (nothrow)}.
@opindex fconcepts
-@opindex fconcepts-ts
@item -fconcepts
-@itemx -fconcepts-ts
Enable support for the C++ Concepts feature for constraining template
arguments. With @option{-std=c++20} and above, Concepts are part of
the language standard, so @option{-fconcepts} defaults to on.
Some constructs that were allowed by the earlier C++ Extensions for
Concepts Technical Specification, ISO 19217 (2015), but didn't make it
-into the standard, can additionally be enabled by
+into the standard, could additionally be enabled by
@option{-fconcepts-ts}. The option @option{-fconcepts-ts} was deprecated
in GCC 14 and removed in GCC 15; users are expected to convert their code
to C++20 concepts.